mirror of
https://github.com/ARUP-CAS/aiscr-qgis-amcr-viewer.git
synced 2026-06-17 11:22:53 +02:00
David Spáčil
546 lines
24 KiB
Python
546 lines
24 KiB
Python
# -*- coding: utf-8 -*-
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from qgis.gui import QgsMapToolIdentifyFeature
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from qgis.core import (QgsProject, QgsVectorLayer, QgsFeature, QgsGeometry,
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QgsField, QgsCoordinateReferenceSystem, QgsCoordinateTransform,
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QgsWkbTypes, QgsRelation, QgsPolymorphicRelation, QgsEditorWidgetSetup, Qgis)
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from qgis.utils import iface
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from qgis.PyQt.QtCore import Qt, QMetaType
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from qgis.PyQt.QtWidgets import QMessageBox, QApplication
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from qgis.PyQt.QtGui import QCursor
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import requests
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import json
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import xml.etree.ElementTree as ET
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import re
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# Global cache to store translated terms from the Digital Archive
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TRANSLATIONS = {}
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def load_translations():
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"""Fetches the official Czech translation dictionary from the AISCR API."""
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global TRANSLATIONS
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if TRANSLATIONS:
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return
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url = "https://digiarchiv.aiscr.cz/api/assets/i18n/cs.json"
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try:
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r = requests.get(url, timeout=10)
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if r.status_code == 200:
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TRANSLATIONS = r.json()
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except Exception as e:
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print(f"Error downloading vocabulary: {e}")
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def tr_code(code):
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"""Translates a technical code into a human-readable string using the global cache."""
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if not code:
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return ""
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return TRANSLATIONS.get(code, code)
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def load_amcr_data(canvas, bb, filters=None, typ_dat="akce", komponenty="false"):
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"""
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Main processing function:
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1. Determines search area (Bounding Box)
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2. Fetches metadata and geometries from API
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3. Creates QGIS memory layers and populates them with features
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"""
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load_translations()
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# --- 1. COORDINATE TRANSFORMATION ---
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# Get current map extent and transform it from project CRS (usually S-JTSK) to WGS-84 for the API
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extent = canvas.extent()
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crs_src = canvas.mapSettings().destinationCrs()
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crs_dest = QgsCoordinateReferenceSystem("EPSG:4326")
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xform = QgsCoordinateTransform(crs_src, crs_dest, QgsProject.instance())
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extent_wgs = xform.transformBoundingBox(extent)
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# Format the bounding box string as required by the API: minLat,minLon,maxLat,maxLon
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bbox_str = f"{extent_wgs.yMinimum()},{extent_wgs.xMinimum()},{extent_wgs.yMaximum()},{extent_wgs.xMaximum()}"
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url = "https://digiarchiv.aiscr.cz/api/search/query"
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iface.messageBar().pushMessage("AMCR", "Hledám záznamy...", level=Qgis.MessageLevel.Info)
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QApplication.setOverrideCursor(QCursor(Qt.CursorShape.WaitCursor))
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try:
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# ==========================================
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# A) METADATA FETCHING (Fieldwork/Site)
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# ==========================================
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base_params = {
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"mapa": "true",
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"sort": "ident_cely asc",
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"entity": typ_dat
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}
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# Restrict search to map window if requested
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if bb == "true":
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base_params["loc_rpt"] = bbox_str
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# Apply multi-select filters from the dialog using the ':or' syntax required by the API
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if filters:
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for key, value in filters.items():
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if not value:
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continue
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if isinstance(value, list):
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base_params[key] = [f"{v}:or" for v in value]
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else:
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base_params[key] = str(value).strip()
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docs = []
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current_page = 0
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BATCH_DOCS = 500 # Records per API request
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MAX_LIMIT = 20000 # Safety limit to prevent QGIS from freezing
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feats_k = [] # List for component features (non-spatial)
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seen_ids = set()
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target_pian_ids_count = 0
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# Check if we should skip negative results based on filter
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skip_negativni = filters.get('posevidence') == 'true' if filters else False
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# --- API PAGINATION LOOP ---
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while True:
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base_params['rows'] = BATCH_DOCS
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if current_page > 0:
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base_params['page'] = current_page
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elif 'page' in base_params:
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del base_params['page']
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try:
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resp_docs = requests.get(url, params=base_params, timeout=30)
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resp_json = resp_docs.json()
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data = resp_json.get('response', {})
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batch_docs = data.get('docs', [])
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num_found = data.get('numFound', 0)
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if not batch_docs:
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break
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# Filter out duplicates and append to main list
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new_docs = []
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for d in batch_docs:
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ident = d.get('ident_cely')
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if ident and ident not in seen_ids:
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seen_ids.add(ident)
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new_docs.append(d)
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docs.extend(new_docs)
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print(f"Strana {current_page} stažena. Celkem záznamů: {len(docs)} / {num_found}")
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if len(docs) >= num_found:
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break
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if len(docs) >= MAX_LIMIT:
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iface.messageBar().pushMessage("AMCR", f"Limit {MAX_LIMIT} záznamů dosažen.", level=Qgis.MessageLevel.Warning)
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break
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current_page += 1
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QApplication.processEvents() # Keep UI responsive
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except Exception as e:
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print(f"Chyba při stránkování na straně {current_page}: {e}")
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break
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if not docs:
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iface.messageBar().pushMessage("AMCR", "Žádné záznamy nenalezeny.", level=Qgis.MessageLevel.Warning)
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return
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# ==========================================
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# B) ATTRIBUTE PARSING
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# ==========================================
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# pian_lookup maps a Geometry ID (PIAN) to a list of its associated metadata
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pian_lookup = {}
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komponenty_lookup = {}
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target_pian_ids = set()
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actions_with_geom = 0
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# Helper function for safe single-value extraction
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def g(doc, key, default=""):
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val = doc.get(key)
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if isinstance(val, list):
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return str(val[0]) if val else default
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return str(val) if val is not None else default
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# Helper function for safe list-value extraction and joining
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def g_list(doc, key, translate=False):
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val = doc.get(key, [])
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if not isinstance(val, list):
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val = [val] if val else []
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if translate:
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return ", ".join([tr_code(str(x)) for x in val if x])
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return ", ".join([str(x) for x in val if x])
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# Process each downloaded metadata record
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for doc in docs:
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piani = doc.get('az_dj_pian', [])
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if not piani:
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continue
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actions_with_geom += 1
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# Extract protected data (fields not available in public Solr index)
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az_chranene = doc.get('az_chranene_udaje', {})
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chranene = doc.get('akce_chranene_udaje') or doc.get('lokalita_chranene_udaje') or {}
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# Format additional cadastral areas from dictionaries
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dalsi_kat = az_chranene.get('dalsi_katastr', [])
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dalsi_kat_str = ""
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if isinstance(dalsi_kat, list):
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items = [x.get('value', '') if isinstance(x, dict) else str(x) for x in dalsi_kat]
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dalsi_kat_str = ", ".join([i for i in items if i])
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lokalizace = chranene.get('lokalizace_okolnosti', "")
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lokalita_nazev = chranene.get('nazev', "")
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lokalita_popis = chranene.get('popis', "")
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# Core metadata structure
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meta = {
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"ident_cely": doc.get('ident_cely', ''),
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"az_okres": g(doc, 'az_okres'),
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"katastr": g_list(doc, 'katastr'),
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"dalsi_katastr": dalsi_kat_str,
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"pristupnost": g(doc, 'pristupnost'),
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"loc": g_list(doc, 'loc')
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}
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# Add entity-specific metadata
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if typ_dat == "akce":
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meta.update({
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"akce_hlavni_vedouci": g(doc, 'akce_hlavni_vedouci'),
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"akce_organizace": tr_code(g(doc, 'akce_organizace')),
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"akce_specifikace_data": tr_code(g(doc, 'akce_specifikace_data')),
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"akce_datum_zahajeni": g(doc, 'akce_datum_zahajeni'),
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"akce_datum_ukonceni": g(doc, 'akce_datum_ukonceni'),
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"akce_hlavni_typ": tr_code(g(doc, 'akce_hlavni_typ')),
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"akce_vedlejsi_typ": g_list(doc, 'akce_vedlejsi_typ', translate=True),
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"lokalizace_okolnosti": str(lokalizace) if lokalizace else "",
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"akce_je_nz": "Ano" if doc.get('akce_je_nz') is True else "Ne",
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})
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elif typ_dat == "lokalita":
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meta.update({
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"lokalita_nazev": lokalita_nazev,
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"lokalita_popis": lokalita_popis,
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"lokalita_zachovalost": tr_code(g(doc, 'lokalita_zachovalost')),
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"lokalita_druh": tr_code(g(doc, 'lokalita_druh')),
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"lokalita_typ": tr_code(g(doc, 'lokalita_typ_lokality')),
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})
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# Documentation units (DJ) within the record
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djs = doc.get('az_dokumentacni_jednotka', [])
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for dj in djs:
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# Filter out negative evidence units if requested
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if skip_negativni and dj.get('dj_negativni_jednotka') is True:
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continue
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dj_id = dj.get('ident_cely')
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dj_typ = dj.get('dj_typ')
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# Merge general meta with documentation unit specific data
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dj_meta = {
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**meta,
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'dj_id': dj_id,
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'dj_typ_value': dj_typ.get('value') if dj_typ else "",
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'dj_negativni': "Negativní" if dj.get('dj_negativni_jednotka') is True else "Pozitivní"
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}
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# Link Documentation Unit to Geometry (PIAN)
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dj_pian = dj.get('dj_pian')
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if dj_pian:
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dj_pian_value = dj_pian.get('id')
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if dj_pian_value:
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target_pian_ids.add(dj_pian_value)
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target_pian_ids_count += 1
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if dj_pian_value not in pian_lookup:
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pian_lookup[dj_pian_value] = []
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pian_lookup[dj_pian_value].append(dj_meta)
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# Parse non-spatial components if requested (for relational tables)
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if komponenty == "true":
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komps = dj.get('dj_komponenta', [])
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for komp in komps:
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komp_temp = [
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komp.get('ident_cely', ""),
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komp.get('komponenta_areal', {}).get('value', ""),
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komp.get('komponenta_obdobi', {}).get('value', "")
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]
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if dj_id not in komponenty_lookup:
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komponenty_lookup[dj_id] = []
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komponenty_lookup[dj_id].append(komp_temp)
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if not target_pian_ids:
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iface.messageBar().pushMessage("AMCR", f"Nalezeno {len(docs)} záznamů, ale žádný nemá geometrii.", level=Qgis.MessageLevel.Warning)
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return
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# ==========================================
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# C) GEOMETRY FETCHING (PIAN)
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# ==========================================
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ids_list = list(target_pian_ids)
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total_pians = len(ids_list)
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docs_pian = []
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BATCH_PIAN = 200 # Geometry requests are batch-processed to stay under URL length limits
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iface.messageBar().pushMessage("AMCR", f"Záznamů: {len(docs)} (z toho {actions_with_geom} s mapou). Stahuji {total_pians} unikátních geometrií, vykresluji {target_pian_ids_count} geometrií...", level=Qgis.MessageLevel.Info)
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fl_pian = ["ident_cely", "pian_typ", "pian_chranene_udaje", "pian_presnost"]
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for i in range(0, total_pians, BATCH_PIAN):
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batch = ids_list[i : i + BATCH_PIAN]
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or_query = " OR ".join(batch)
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fq_pian = f"ident_cely:({or_query})"
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params_pian = {
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"mapa": "true",
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"entity": "pian",
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"q": fq_pian,
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"rows": len(batch),
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"fl": ",".join(fl_pian)
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}
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try:
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QApplication.processEvents()
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r_pian = requests.get(url, params=params_pian, timeout=15)
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batch_docs = r_pian.json().get('response', {}).get('docs', [])
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docs_pian.extend(batch_docs)
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except Exception as e:
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print(f"Chyba PIAN: {e}")
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# ==========================================
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# D) LAYER CREATION (QGIS Memory Layers)
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# ==========================================
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archeologicky_zaznam = "Akce" if typ_dat == "akce" else "Lokalita"
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# Initialize three layers for different geometry types (S-JTSK CRS)
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vl_poly = QgsVectorLayer("Polygon?crs=epsg:5514", f"AMCR_{archeologicky_zaznam}_Polygony", "memory")
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vl_line = QgsVectorLayer("LineString?crs=epsg:5514", f"AMCR_{archeologicky_zaznam}_Linie", "memory")
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vl_point = QgsVectorLayer("Point?crs=epsg:5514", f"AMCR_{archeologicky_zaznam}_Body", "memory")
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layers = [vl_poly, vl_line, vl_point]
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# Define attribute table structure
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cols = [
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QgsField("PIAN", QMetaType.Type.QString),
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QgsField("Přesnost", QMetaType.Type.QString),
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QgsField("PIAN – typ", QMetaType.Type.QString),
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QgsField("Dokumentační jednotka", QMetaType.Type.QString),
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QgsField("Typ dokumentační jednotky", QMetaType.Type.QString),
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QgsField("Definiční bod(y) (WGS-84)", QMetaType.Type.QString),
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QgsField(archeologicky_zaznam, QMetaType.Type.QString),
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QgsField("Odkaz do Digitálního archivu AMČR", QMetaType.Type.QString),
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QgsField("Okres", QMetaType.Type.QString),
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QgsField("Katastr", QMetaType.Type.QString),
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QgsField("Další katastry", QMetaType.Type.QString)
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]
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# Extend table based on data type
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if typ_dat == "akce":
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cols += [
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QgsField("Akce – lokalizace", QMetaType.Type.QString),
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QgsField("Vedoucí akce", QMetaType.Type.QString),
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QgsField("Organizace", QMetaType.Type.QString),
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QgsField("Specifikace data", QMetaType.Type.QString),
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QgsField("Datum zahájeni", QMetaType.Type.QString),
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QgsField("Datum ukončení", QMetaType.Type.QString),
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QgsField("Hlavní typ", QMetaType.Type.QString),
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QgsField("Vedlejší typ", QMetaType.Type.QString),
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QgsField("Zjištění", QMetaType.Type.QString),
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QgsField("Akce – nahrazuje NZ", QMetaType.Type.QString),
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]
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elif typ_dat == "lokalita":
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cols += [
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QgsField("nazev_lokality", QMetaType.Type.QString),
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QgsField("popis_lokality", QMetaType.Type.QString),
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QgsField("typ_lokality", QMetaType.Type.QString),
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QgsField("druh_lokality", QMetaType.Type.QString),
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QgsField("zachovalost", QMetaType.Type.QString)
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]
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cols.append(QgsField("Přístupnost", QMetaType.Type.QString))
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# Use aliases for technical field names
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alias_map = {
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"nazev_lokality": "Název lokality",
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"popis_lokality": "Popis lokality",
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"typ_lokality": "Typ lokality",
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"druh_lokality": "Druh lokality",
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"zachovalost": "Zachovalost"
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}
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# Create a non-spatial table for components if requested
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if komponenty == "true":
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vl_komponenty = QgsVectorLayer("None", "AMCR Komponenty", "memory")
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pr = vl_komponenty.dataProvider()
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komponenty_cols = [
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QgsField("komponenta", QMetaType.Type.QString),
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QgsField("dj_id", QMetaType.Type.QString),
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QgsField("komponenta_areal", QMetaType.Type.QString),
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QgsField("komponenta_obdobi", QMetaType.Type.QString),
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QgsField("vrstva", QMetaType.Type.QString)
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]
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pr.addAttributes(komponenty_cols)
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vl_komponenty.updateFields()
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idx_vrstva = vl_komponenty.fields().indexOf("vrstva")
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vl_komponenty.setEditorWidgetSetup(idx_vrstva, QgsEditorWidgetSetup("Hidden", {}))
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for vl in layers:
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vl.dataProvider().addAttributes(cols)
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vl.updateFields()
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for tech_name, alias in alias_map.items():
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idx = vl.fields().lookupField(tech_name)
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if idx != -1:
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vl.setFieldAlias(idx, alias)
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# Lists to hold features before batch-adding to layers
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feats_p, feats_l, feats_pt = [], [], []
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# --- FEATURE POPULATION ---
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for doc in docs_pian:
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try:
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pid = doc.get('ident_cely', '')
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if pid not in pian_lookup:
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continue
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metas = pian_lookup[pid]
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# Extract WKT geometry from protected JSON data
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raw = doc.get('pian_chranene_udaje')
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if isinstance(raw, list) and raw:
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raw = raw[0]
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jdata = json.loads(raw) if isinstance(raw, str) else (raw or {})
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wkt = None
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if jdata.get('geom_sjtsk_wkt'):
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wkt = jdata.get('geom_sjtsk_wkt', {}).get('value')
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elif jdata.get('geom_wkt'):
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wkt = jdata.get('geom_wkt', {}).get('value')
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pian_presnost = tr_code(str(doc.get('pian_presnost', '')))
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pian_typ = tr_code(str(doc.get('pian_typ', '')))
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# Final precision filter check
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if filters and filters.get('f_pian_presnost') and doc.get('pian_presnost') not in filters.get('f_pian_presnost'):
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continue
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if wkt:
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geom = QgsGeometry.fromWkt(wkt)
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if geom.isGeosValid():
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t = geom.type()
|
||
target_list = None
|
||
if t == QgsWkbTypes.PolygonGeometry:
|
||
target_list = feats_p
|
||
referenced_layer = vl_poly
|
||
elif t == QgsWkbTypes.LineGeometry:
|
||
target_list = feats_l
|
||
referenced_layer = vl_line
|
||
elif t == QgsWkbTypes.PointGeometry:
|
||
target_list = feats_pt
|
||
referenced_layer = vl_point
|
||
|
||
if target_list is None:
|
||
continue
|
||
|
||
is_akce = (typ_dat == "akce")
|
||
|
||
# Create a QGIS feature for each documentation unit associated with this geometry
|
||
for meta in metas:
|
||
feat = QgsFeature()
|
||
feat.setGeometry(geom)
|
||
atributy = [
|
||
pid, pian_presnost, pian_typ, meta['dj_id'],
|
||
meta['dj_typ_value'], meta['loc'], meta['ident_cely'],
|
||
"https://digiarchiv.aiscr.cz/id/" + meta['ident_cely'],
|
||
meta['az_okres'], meta['katastr'], meta['dalsi_katastr']
|
||
]
|
||
if is_akce:
|
||
atributy.extend([
|
||
meta['lokalizace_okolnosti'], meta['akce_hlavni_vedouci'],
|
||
meta['akce_organizace'], meta['akce_specifikace_data'],
|
||
meta['akce_datum_zahajeni'], meta['akce_datum_ukonceni'],
|
||
meta['akce_hlavni_typ'], meta['akce_vedlejsi_typ'],
|
||
meta['dj_negativni'], meta['akce_je_nz']
|
||
])
|
||
else:
|
||
atributy.extend([
|
||
meta['lokalita_nazev'], meta['lokalita_popis'],
|
||
meta['lokalita_typ'], meta['lokalita_druh'],
|
||
meta['lokalita_zachovalost']
|
||
])
|
||
|
||
if komponenty == "true" and meta['dj_id'] in komponenty_lookup:
|
||
for k in komponenty_lookup[meta['dj_id']]:
|
||
if len(k) == 3:
|
||
k.append(referenced_layer.id())
|
||
|
||
atributy.append(meta['pristupnost'])
|
||
feat.setAttributes(atributy)
|
||
target_list.append(feat)
|
||
|
||
except Exception as ex:
|
||
print(f"Chyba při tvorbě feature: {ex}")
|
||
pass
|
||
|
||
if komponenty == "true":
|
||
for k in komponenty_lookup:
|
||
for komp in komponenty_lookup[k]:
|
||
if len(komp) == 4:
|
||
feat = QgsFeature()
|
||
atributy = [
|
||
komp[0], k, komp[1], komp[2], komp[3]
|
||
]
|
||
feat.setAttributes(atributy)
|
||
feats_k.append(feat)
|
||
|
||
# --- ADDING TO QGIS INTERFACE ---
|
||
proj = QgsProject.instance()
|
||
added = 0
|
||
layers_to_process = [
|
||
(feats_p, vl_poly, "Polygony"),
|
||
(feats_l, vl_line, "Linie"),
|
||
(feats_pt, vl_point, "Body"),
|
||
]
|
||
|
||
if komponenty == "true":
|
||
layers_to_process.append((feats_k, vl_komponenty, "Komponenty"))
|
||
|
||
for f, l, n in layers_to_process:
|
||
if f:
|
||
l.dataProvider().addFeatures(f)
|
||
l.updateExtents()
|
||
l.setName(f"AMCR_{archeologicky_zaznam}_{n}")
|
||
proj.addMapLayer(l)
|
||
if n != "Komponenty":
|
||
added += len(f)
|
||
|
||
if added > 0:
|
||
iface.messageBar().pushMessage("AMCR", f"Hotovo. Záznamů: {len(docs)} (s geom: {actions_with_geom}). Vykresleno: {added} prvků.", level=Qgis.MessageLevel.Success)
|
||
|
||
# --- RELATIONSHIP MANAGEMENT ---
|
||
# Set up automatic links between spatial layers and the component table
|
||
if komponenty == "true":
|
||
parent_layers_ids = [vl_poly.id(), vl_line.id(), vl_point.id()]
|
||
rel_manager = proj.relationManager()
|
||
|
||
rel = QgsPolymorphicRelation()
|
||
rel.setId(f"rel_komponenty_{archeologicky_zaznam}")
|
||
rel.setName("Komponenty")
|
||
rel.setReferencingLayer(vl_komponenty.id())
|
||
rel.setReferencedLayerExpression("@layer_id")
|
||
rel.setReferencedLayerField("vrstva")
|
||
rel.setReferencedLayerIds(parent_layers_ids)
|
||
rel.addFieldPair("dj_id", "Dokumentační jednotka")
|
||
|
||
if rel.isValid():
|
||
rel_manager.addPolymorphicRelation(rel)
|
||
else:
|
||
print("Relace Komponenty není validní!")
|
||
|
||
else:
|
||
iface.messageBar().pushMessage("AMCR", "Žádná data k zobrazení.", level=Qgis.MessageLevel.Info)
|
||
|
||
except Exception as e:
|
||
iface.messageBar().pushMessage("Chyba", str(e), level=Qgis.MessageLevel.Critical)
|
||
finally:
|
||
# Always restore cursor, even after failure
|
||
QApplication.restoreOverrideCursor() |